Power-transmission mechanism.



T. B. VALE.

POWER TRANSMISSION MECHANISM.

APPLICATION FILED MAR. 16, 1912.

Patented June 24, 1913.

" lllllll cogumnm FLANOGRAFH CO WASHXNGTON, n. c.

T. B. VALE.

POWER TRANSMISSION MECHANISM.

APPLICATION FILED MAR. 16, 1912.

' Patented June 24, 1913.

2 SHEETS-SHEET 2.

THOMAS BOWMAN VATJE, 0F ROGERS, OHIO.

POWER-TRANSMISSION MECHANISM.

Specification of Letters Patent.

Patented June 24, 1913.

Application filed March 16, 1912. Serial No. 684,158.

To all whom it may concern Be it known that I, THOMAS BOWMAN VALE, acitizen of the United States, residing at Rogers, in the county ofColumbiana and State of Ohio, have invented certain new and usefulImprovements in Power- Transmission Mechanism; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to power transmission mechanism, and it moreparticularly relates to a combination of elements cooperativelyconnecting a steam engine to a pump, the latter being adapted to supplywater to the boiler of said engine.

The prime object of my invention is to cooperatively connect a steamengine and a pump for varying the supply of water being fed to a boiler,connected with said pump, whereby the water supply may be easilyregulated by the engineer, and with the maximum degree of efficiency andthe minimum loss of power.

Other objects and advantages may be recited hereinafter and in theclaim.

In the accompanying drawings, which are made a part of this application,Figure 1 is a side elevational view of an engine and a pumpcooperatively connected with my improved power transmission mechanism.Fig. 2 is a plan view of a fragment of the engine having my improvedpower transmission mechanism applied, and, Fig.3 is a vertical sectionalview taken on the line 33 of Fig. 1.

Referring to the drawings, in which similar reference numerals designatecorresponding parts throughout the several views, the body or frame ofthe engine is represented by the numeral 5, and to this frame is securedthe usual cylinder 6, steam chest 7, eccentric rod 8, piston rod 9, andcross-head 10. The cross-head is adapted to reciprocate between theusual guides 11. The cross-head 10 is provided wit-h a later allyextending boss 12 having a wrist-pin 13 extending therefrom, the link 14being pivoted thereto.

Pivotally secured to the side of the cylinder 6 on a fixed pivot is arocker member consisting of a toothed segment 15 and a pair of parallelspaced guide bars 16 and 17 on opposite sides of and extendinglongitudinally and equally in opposite directions from said pivot.

A standard 18 is secured on the top of the cylinder 6 and carries ahousing 19, in which is seated a screw or worm 20, connected with a rod21, which is journaled in the housing at 22. A standard 23 and a bearing24 support the other end of the rod 21, which carries a hand wheel 25,by which the screw 20 may be rotated. Said screw 20 is in mesh with theteeth of the segment 15, and therefore, when the screw 20 is rotated,the segment 15 is moved arcuately and it is obvious that when thesegment is moved to the extreme position opposite that which is shown inFig. 1, the guide bars 16 and 17 will be inclined in an oppositedirection from that shown. One end of the link 14 carries a block havinga pivot pin 26 extending laterally from its opposite sides, andcross-heads 27 and 28, respectively, are pivoted on said pivot pin.

Secured on the frame 5 of the engine is a lateral and depending arm 29,to which is pivotally secured, at 30, a bell-crank lever 31 consistingof a normally vertical arm 32 and a normally horizontal arm 33, thelatter being provided with spaced guide bars 34 and 35. The arm 32 isbifurcated at its lower end, and the furcations 36 of said arm embracethe opposite sides of a wrist-pin 37, projecting laterally from a guiderod 38, slidably seated in the bearings 39 and connected with a pumppiston 40. The pump cylinder 41 is provided with an intake pipe 42, anda feed pipe or outlet pipe may be connected, in any proper manner, withsaid pump for supplying water to a boiler Or the like (not shown).

In operation, considering the various elements to be in the positionshown in Fig. 1; as the crosshead 10 is reciprocated the link 14 isreciprocated therewith and the cross-head 27 is thereby caused to slidealong the inclined path between the guides 16 and 17, crossing the fixedpivot of the rocker member in each direction and carry ing thecross-head 2S therewith. Obviously, the cross-head 23 reciprocatesbetween the guides 34 and 35, and in doing so carries the free end ofthe arm 33 upward and downward alternately, twice in each completemovement from end to end of said guides as the cross-head 27reciprocates along said inclined path. It is obvious that twooscillatory motions are thereby imparted to the arms 32 and 33 duringeach single reciprocation of the link it, and the guide rod 38 andpiston 4:0 are thereby reciprocated twice as often as the cross-head foractuating the pump at double speed. Now, assuming that the rod. 21 andscrew 19 are rotated until the guide rods 16 and l? reach a horizontalposition, it will be seen that the guides Bl and will be paralleltherewith, and therefore, no motion would be transmitted to the arm 32or piston 40. If, however, the guide bars 16 and 17 are inclinedslightly, a slight motion will be imparted. to the pump piston rod and asmall quantity of water will be pumped.

It is obvious, from the foregoing, that the rate of pumping may bevaried in proportion to the inclination of the guide bars 16 and 17, andthat this inclination of the guide bars is varied through the medium ofthe rod 21 and hand wheel il hile I have described my improvedtransmission mechanism as being operatively connected with a pumpingengine, it is to be understood that the several accompanying elementsmay be varied in form, so as to be operatively connected with a machineother than a pumping engine. Therefore, in the following, the machine towhich this transmission mechanism is operatively connected will becalled a motor, and it will be understood that the term motor appliesbroadly to any kind or character of machine with which this transmissionmechanism is capable of being operatively connected.

I do not limit invention to the exact combination of parts, mechanism ordetails of construction as herein described and shown,

oo-acre but my invention may only be limited by a reasonableinterpretation of the following claim.

hat I claim is:

The combination with a motor comprising a member adapted to berectilinearly reciprocated in fixed guides and a driven mechanismcomprising a member likewise reciprocable in fixed rectilinear guides,of a transmission mechanism comprising a fixed pivot, a rocker membermounted centrally on the fixed pivot and provided with parallel guidebars on opposite sides of and extending longitudinally and equally inopposite directions from said fixed pivot, a second fixed pivot, anelbow lever pivotally mounted at its angle on said second fixed pivot,having one arm connected with the reciprocable member or the drivenmechanism and the other arm formed into parallel guide bars, a linkconnected with the reciprocable member of the motor, a block carried bysaid link, a pivot pin in and projecting laterally from said block, acrosshead slidably fitted in the guide bars of the rocker member andpivotally mounted on said pivot pin, a second crosshead slidably fittedin the guide bars of the elbow lever and likewise pivotally mounted onsaid pivot pin, and means for adjusting the rocker member on its fixedpivot.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS BOlVMAN VALE.

Witnesses ELI C. VALE, GRACE M. VVILLTAMs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of ratencs. Washington, D. C.

